Education
Kyoto University.
西山 豊
Kyoto University.
He is known as the "boomerang professor". He has written nine books about the mathematics in daily life. The most recent one, The mystery of five in nature, investigates, amongst other things, why many flowers have five petals.
1967-1971: Faculty of Mathematics, Department of Science, Kyoto University
1971-1985: International Business Machines Corporation Japan as a Systems Engineer
1985: Lecturer of Information Mathematics at Osaka University of Economics
1995–present: Professor at Osaka University of Economics
2005-2006: Visiting fellow at University of Cambridge, United Kingdom, joined for MMP.
General Solution for Multiple Foldings of Hexaflexagons IJPAM, Volume
58, Number. 1, (2010). 113-124. "19 faces of Flexagons"
Fixed Points in Similarity Transformations IJPAM, Volume
56, Number. 3, (2009). 429-438.
A bright idea, Plus Magazine, issue 36, University of Cambridge, September 2005.
Mysterious Number 6174, Plus Magazine, issue 38, University of Cambridge, March 2006. Winning Odds, with Steve Humble, Plus Magazine, issue 55, University of Cambridge, June 2010.
Having fun with unit fractions, Plus Magazine, University of Cambridge, February 2012. Circles rolling on circles, Plus Magazine, University of Cambridge, May 2014.
